problem with figuring out where to find photos in Windows 10

Just got Windows 10 and transferred photos (taken over about a year) from iPhone to the computer. They are automatically grouped by date which is OK, except that I can't find the few of the photos that I had put a caption to (i.e, gave them a brief title, like "sea turtle"). There does not seem to be a "help" option in Windows 10 where you can go directly to find out how to categorized, group, or label photos - or at least I can't find it. So where can I get instructions for locating those photos with captions, or reorganizing the photos the way I want, not the way Windows chooses to group them?